||Futoshiki, the sequel to Kakuro, Unequal is a logic puzzle game from Japan.
Its name means "Inequality". It is also spelled hutosiki (using Kunrei-shiki romanization).
The first step to solve the puzzle is to enumerate possible values based on inequalities and non-duplication within rows and columns.
Then AB elimination may be usable to narrow down the range of possibilities. As shown here, the top and bottom positions in the center column must contain 5 and 3, so these can be excluded from the second and fourth positions.
Logical deduction within the inequalities can restrict the range of possibilities.